Formula for Calculating
8.34 lb./million gallons = 1 ppm
Maximum dilution rate = 1 lb./gallon
GPM x 60 = GPH
GPH x (ppm required x 8.34) = Answer
Answer x .000001 = # / Hour of chemical
Example;
Main Well
500 GPM x 60 = 30,000 x (7.8ppm x 8.34) =
1,951,560x .000001 = 1.95 # / HR of Chemical
Recommended chemical feed pump for this application would be 4 GPH, which leaves room
for adjustment in case of hard water (you would then have to reduce the ratio to 1/2 lb./gallon)
500 GPM x 60 = 30,000 x (7.8ppm x 8.34) =
1,951,560x .000001 = 1.95 # / HR of Chemical
Normal mix ratio 1# / 1 gal
Recommended chemical feed pump for this application would be 4 GPH, which leaves room
for adjustment in case of hard water (you would
then have to reduce the ratio to 1/2 lb./gallon)
Standby Well
250 GPM x 60 = 15,000 x (4.4 ppm x 8.34) =
550,440x .000001 =.55 # / HR of Chemical
Normal mix ratio 1# / 1 gal
Recommended chemical feed pump for this application would be 1 GPH, which leaves room
for adjustment in case of hard water (you would then have to reduce the ratio to 1/2 lb./gallon)